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1、大多数形容词和副词有三个等级：原级、比较级、最高级。一、构成规则及变化:1 1、规则变化 2 2、不规则变化第1页/共22页1.规则变化:1)单音节词和少数双音节词一般在词尾 后加-er 构成比较级 或-est构成最高级.如：原级 比较级 最高级 cold colder coldest bright brighterbrightest young younger youngest第2页/共22页2)以字母 e 结尾的词只加 r 或-st 构成 比较级和最高级。原级 比较级 最高级 nice nicer nicest fine finer finest large larger largest第
2、3页/共22页3)重读闭音节词末尾只有一个辅音字母时,先双写这个辅音字母,再加-er或-est。如:big bigger biggest thin thinner thinnest 4)以“辅音字母+y”结尾的双音节词，先改y为i,再加-er或-est。如：easy easier easiest happy happier happiest第4页/共22页5)多音节词和部分双音节词在词前加more 或most。如：delicious more delicious most delicious interesting more interesting most interesting impor
3、tantmore important most important第5页/共22页carefully-more carefully-most carefullyquickly-more quickly-most quicklyslowly-more slowly-most slowlyeasily-more easily-most easily第6页/共22页2.不规则变化：原级原级比较级比较级最高级最高级 good/well better best bad/badly/ill worse worst little less least many/much more most far fart
4、her/further farthest/furthest old older/elder oldest/eldest第7页/共22页现学现练一：1.good fortable 3.big 4.happy 5.cheap 6.many 7.difficult 8.little better best more comfortable most comfortable bigger biggest happier happiest cheaper cheapest more most more difficult most difficult less least第8页/共22页二、形容词和副词
5、比较级的用法 1.Who runs faster,he or she?2.He runs faster than she.3.He runs much faster than she.4.He becomes healthier and healthier.5.The more you exercise,the healthier you will be.6.She is less healthy than he.第9页/共22页 1.表示两者之间的选择,可用 “Which/Who +比较，or?”.2.2.表示两者之间的比较，通常用连词表示两者之间的比较，通常用连词 than than 引导
6、，引导，表示表示“更更一些一些”3.much/far/a lot,even,still,a little/a bit 修饰比较级,表示程度.Who runs faster,he or she?He runs faster than she.He runs much faster than she.第10页/共22页4.“比较级+and+比较级”表示“越来越”5.“the+比较级,the+比较级”表示“越,越”6.表示不及另一方时，用“less+原级+than”(双音节和多音节词)He becomes healthier and healthier.The more you exercise,t
7、he healthier you will be.She is less healthy than he.He is healthier than she.Shanghai is becoming more and more modern.第11页/共22页现学现练二：1.比较级+and+比较级 越来越2.the+比较级,the+比较级 越,越 3._you are,_mistakes you will make.(你越仔细，做错的题目就越少）4._you eat,_youll be.(你吃得越多,就越胖)5.Alice writes well.Mary writes _ than she.(
8、甚至更好）The more carefulthe fewerThe morethe fatter1.The girl becomes _.(越来越漂亮）more and more beautiful2.The weather is getting _.(越来越槽糕）worse and worseeven/still better第12页/共22页1.用法：英语中三者或三者以上相比较，表示“最”这样的最高程度概念时，要用“the+最高级”的结构表示。这种句式一般带有表示比较的介词短语，比如:in our class,of the three 等。例如：Wang Lin is the talles
9、t in our class.This theater is the cheapest of the three.注意使用最高级时应注意以下几点：三、形容词和副词的最高级形容词和副词的最高级第13页/共22页 (1)表示“中最之一”的句式，要用 one of the+形容词最高级+复数名词。例如:Jingjiang Hotel is one of the biggest hotels in our city.Lisa is not one of my best friends.(2)当最高级前面有物主代词或名词所有格时，不加定冠词 the。例如：Tom is Lucys best friend
10、.Tuesday is her busiest day.第14页/共22页(3)最高级前可加序数词。例如：The Yellow River is the second longest river in China.(4)形容最高级修饰作表语或介词宾语的名词，代词时，被修饰的词往往省略。例如：He is the laziest(student)in our class.第15页/共22页 1.Hainan is a very large Island.It is the second _ island in china.(large)2.Our teacher is as _ as before
11、.(Our teacher is as _ as before.(busy).).3.He is _ among us.(3.He is _ among us.(careful)4.Li Lei jumped far _ than Jim.(far)4.Li Lei jumped far _ than Jim.(far)5.The busier he is,the _ he feels.(5.The busier he is,the _ he feels.(happy)6.I think Yao Ming is one of _ basketball players in NBA.(hot)b
12、usythe most carefulfartherhappierlargestthe hottest现学现练三（完成句子）第16页/共22页1.表示三者或三者以上比较,可用”Which/Who +最高级,or?”表示.2.最高级+of/among(同类比较)in(范围比较)4.one of+形容词最高级+名词复数表示“最 之一”3.序数词修饰最高级总结提高Who is the tallest,Tom,Mike,or Jack?Tom is the tallest of the three.Mike is the second tallest student in our class.Jack
13、 is one of the tallest students in our class.Tom runs(the)fastest in our class.第17页/共22页1.Paul is very _.He is _ than his brother.A.heavy-heavierB.heavy-heavy C.heavier-heavier D.heavy-heavyer2.It has the _ clothing store in the town.A.goodest B.gooddest C.best D.better3.This ruler is _ than that on
14、e.A.long B.longer C.the longest D.longest4.This book is _ of all.A.cheapest B.cheap C.cheaper D.the cheapest5.He is much _ than his brother.A.tall B.taller C.the tallest D.tallest6.Li Lei is _ older than Lucy.A.quite B.very C.much D.moreExercise:一.单选第18页/共22页7.This is one of _ films of this year.A.m
15、ore exciting B.exciting C.the most exciting D.most exciting8.The weather in Beijing is colder than_.A.in Guangzhou B.Guangzhou C.that in Guangzhou D.that from Guangzhou9.Tom is _ of the two boys.A.taller B.tallest C.the taller D.the tallest10.Of my parents,my father looks_.A.old B.older C.the oldest
16、 D.the older11.This watch is _ than that one.A.much expensive B.expensiver C.more expensiver D.more expensive第19页/共22页 3.Lin Tao is _ in the class because he never gets to school on time.（最懒的学生之一）4.Edison was_ in the world.(最伟大的发明家之一）one of the laziest studentsone of the greatest inventors1.The Yangtze River is_ river in the world.(第三长河）the third longest2.The Atlantic is _ ocean in the world.(第二大洋）the second biggest二、翻译句子：第20页/共22页第21页/共22页感谢您的观看！第22页/共22页